Jennifer Lopez headlined the Mohegan Sun 15th Anniversary party, which featured celebs like Terrence Howard, Nick Lachey, and many more. Did Jennifer Lopez cry on stage at Mohegan Sun? Not quite. Celebrity chefs Buddy Valastro, Bobby Flay, and Todd English were on hand for signings and photos, and there was a performance by the stars of 'So You Think You Can Dance,' read the Java recap. The day was topped by a red carpet walk before J-Lo's concert.